Initial commit
This is the latest version found at http://scentric.net/tutorial/treeview-tutorial-xml.tar.gz
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12
examples/simple-list/Makefile
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12
examples/simple-list/Makefile
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CC = gcc
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CFLAGS = -Wall -g -O2 `pkg-config --cflags gtk+-2.0`
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all: simple-list
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simple-list: list.o
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gcc -o simple-list list.o `pkg-config --libs gtk+-2.0`
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clean:
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rm -f *.o simple-list *.c~ *.h~ 2>/dev/null
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231
examples/simple-list/list.c
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231
examples/simple-list/list.c
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#include <gtk/gtk.h>
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enum
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{
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COL_TEXT = 0,
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NUM_COLS
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};
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static GtkWidget *treeview;
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static GtkWidget *delbutton;
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/**************************************************************************
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*
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* onAddButtonPress
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*
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* Button has been clicked, or <enter> has been hit in entry
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*
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**************************************************************************/
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static void
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onAddButtonPress (GtkWidget *entry, gpointer data)
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{
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const gchar *txt;
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g_assert(GTK_IS_ENTRY(entry));
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txt = gtk_entry_get_text(GTK_ENTRY(entry));
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/* ignore if entry is empty */
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if (txt && *txt)
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{
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GtkTreeModel *model;
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GtkTreeIter newrow;
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model = gtk_tree_view_get_model(GTK_TREE_VIEW(treeview));
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gtk_list_store_append(GTK_LIST_STORE(model), &newrow);
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gtk_list_store_set(GTK_LIST_STORE(model), &newrow, COL_TEXT, txt, -1);
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gtk_entry_set_text(GTK_ENTRY(entry), ""); /* clear entry */
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}
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}
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/**************************************************************************
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*
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* onDelButtonPress
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*
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**************************************************************************/
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static void
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onDelButtonPress (GtkWidget *button, gpointer data)
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{
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GtkTreeSelection *sel;
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GtkTreeModel *model;
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GtkTreeIter selected_row;
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sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview));
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g_assert(gtk_tree_selection_get_mode(sel) == GTK_SELECTION_SINGLE);
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if (gtk_tree_selection_get_selected(sel, &model, &selected_row))
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{
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gtk_list_store_remove(GTK_LIST_STORE(model), &selected_row);
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}
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else
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{
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/* If no row is selected, the button should
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* not be clickable in the first place */
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g_assert_not_reached();
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}
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}
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/**************************************************************************
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*
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* onSelectionChanged
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*
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* Sets 'delete selected row' button active or inactive, depending
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* on whether a row is selected or not. This function is called
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* whenever the selection changes.
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*
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**************************************************************************/
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static void
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onSelectionChanged (GtkTreeSelection *sel, GtkListStore *liststore)
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{
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GtkTreeIter selected_row;
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/* Check if a row is selected or not */
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/* This will only work in SINGLE or BROWSE mode! */
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if (gtk_tree_selection_get_selected(sel, NULL, &selected_row))
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{
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gtk_widget_set_sensitive(delbutton, TRUE);
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}
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else
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{
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gtk_widget_set_sensitive(delbutton, FALSE);
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}
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}
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/**************************************************************************
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*
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* create_list_view
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*
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* sets up the tree view and returns a GtkTreeView widget
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*
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**************************************************************************/
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static GtkWidget *
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create_list_view (void)
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{
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GtkCellRenderer *renderer;
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GtkTreeViewColumn *col;
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GtkTreeSelection *sel;
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GtkListStore *liststore;
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GtkWidget *view;
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liststore = gtk_list_store_new(NUM_COLS, G_TYPE_STRING); /* NUM_COLS = 1 */
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view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(liststore));
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renderer = gtk_cell_renderer_text_new();
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col = gtk_tree_view_column_new();
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gtk_tree_view_column_pack_start(col, renderer, TRUE);
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gtk_tree_view_column_add_attribute(col, renderer, "text", COL_TEXT);
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gtk_tree_view_column_set_title(col, " Your items here ");
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gtk_tree_view_append_column(GTK_TREE_VIEW(view), col);
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sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(view));
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gtk_tree_selection_set_mode(sel, GTK_SELECTION_SINGLE);
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g_signal_connect(sel, "changed", G_CALLBACK(onSelectionChanged), liststore);
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return view;
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}
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/**************************************************************************
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*
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* create_entry_hbox
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*
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* Returns GtkHBox widget with entry and button inside
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*
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**************************************************************************/
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static GtkWidget *
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create_entry_hbox (void)
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{
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GtkWidget *addbutton;
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GtkWidget *entry;
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GtkWidget *hbox;
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hbox = gtk_hbox_new(FALSE, 2);
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/* when 'return' is pressed, add text to list
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* just as if the button had been pressed */
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entry = gtk_entry_new();
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g_signal_connect(entry, "activate", G_CALLBACK(onAddButtonPress), NULL);
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gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0);
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addbutton = gtk_button_new_with_label(" Add text to list ");
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/* using _swapped, so that the first argument to the callback
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* is what we specify as 'data' argument here, ie. the entry,
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* and data argument to callback is what is the object to
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* connect to here, ie. the button */
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g_signal_connect_swapped(addbutton, "clicked", G_CALLBACK(onAddButtonPress), entry);
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gtk_box_pack_start(GTK_BOX(hbox), addbutton, FALSE, FALSE, 0);
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delbutton = gtk_button_new_with_label(" Remove selected row ");
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g_signal_connect(delbutton, "clicked", G_CALLBACK(onDelButtonPress), NULL);
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gtk_box_pack_start(GTK_BOX(hbox), delbutton, FALSE, FALSE, 0);
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/* at beginning no rows, so nothing to delete */
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gtk_widget_set_sensitive(delbutton, FALSE);
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return hbox;
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}
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/**************************************************************************
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*
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* main
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*
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**************************************************************************/
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int
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main (int argc, char **argv)
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{
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GtkWidget *window;
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GtkWidget *scrollwin;
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GtkWidget *tophbox;
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GtkWidget *vbox;
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gtk_init(&argc, &argv);
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window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
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gtk_window_set_default_size(GTK_WINDOW(window), 300, 200);
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gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
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g_signal_connect(window, "delete_event", gtk_main_quit, NULL); /* dirty */
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vbox = gtk_vbox_new(FALSE, 2);
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tophbox = create_entry_hbox();
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gtk_box_pack_start(GTK_BOX(vbox), tophbox, FALSE, FALSE, 0);
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scrollwin = gtk_scrolled_window_new(NULL,NULL);
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gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrollwin),
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GTK_POLICY_AUTOMATIC,
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GTK_POLICY_AUTOMATIC);
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treeview = create_list_view();
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gtk_container_add(GTK_CONTAINER(scrollwin), treeview);
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gtk_box_pack_start(GTK_BOX(vbox), scrollwin, TRUE, TRUE, 0);
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gtk_container_add(GTK_CONTAINER(window), vbox);
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gtk_widget_show_all(window);
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gtk_main();
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return 0;
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}
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